MONTANA RAMBO's STEPMOTHER: "You Would Think He's the Sweetest Person Alive"

(...)Burgert's stepmother Sandra Burgert, 67, said she's "flabbergasted" at the latest news.

"He made good grades in school, he got along with people," said Sandra Burgert, who lives in Mount Dora, Fla. "He likes his trucks, and he was a survivalist, he just tended to be that way."

When the family lived in Colorado, she said, "his only hobby was collecting guns when he was 19."

"He never seemed to be depressed," she added. "You meet him you would think he's the sweetest person alive."

Sandra Burgert said she last spoke to her stepson in the early '90s, and described his family life as troubled: His grandfather reportedly committed suicide and his biological mother, who used to be a nurse in the army, had her own run-ins with the law.

David Burgert, who used to be in the Marines, went AWOL, according to his stepmother, in the early '80s.

The stepson she knew had a good personality and was a "very likable, very handsome young man(...)"